Apparatus for forming mortises in ends of bamboos or other round rods.



Patented June 27, I899.

No. 627,9l6.

E. FBAMPTON. APPARATUS FOR FORMING CUBVED MORTISES IN ENDS 0F BAMBOOS OROTHER R0 u N n n 0 n s. (Application filed Apr. 25, 1899.)

2 SheetsSheet I.

(No llodel.)

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WITNESSES No. 627,9!6. Patented June 27,- I899.

E. FRAMPTON.

APPARATUS FOR FORMING CURVED MORTISES IN ENDS 0F BAMBOOS OR OTHER ROUNDRODS.

(Application filed Apr. 25, 1899.)

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UNirnn STATES PATENT 1 tries.

APPARATUS FOR FORMING CURVED MORTISES IN ENDS OF B AMBOOS OR OTHER ROUNDRODS-T SPECIFICATION forming part of Letters Patent No. 627,916, datedJune 27, 1899.

Application filed April 25, 1899. Serial-No. 714,454. (No model.)

To all whom it may concern:

Be it known that I, ELI FRAMPTON, a subject of the Queen of GreatBritain, residing at Manchester, in the county of Lancaster, England,have invented new and useful Improved Apparatus for Forming CurvedMortises in the Ends of Bamboos or other Round Rods, of which thefollowing is a specification."

This invention relates to means or appara tus for mortising the ends ofbamboo or similar tubular or other round rods in order to make aframework or similar structure, the invention being designed principallyto facilitate the manufacture of bamboo furniture.

The manner in which my said invention is to be performed or carried intopractical effeet will be readily understood on reference to the sheet ofdrawings hereunto annexed and the following explanation thereof.

Figure 1 on the drawings is a side elevation, and Fig. 2 a front view,of my improved apparatus applied to a vertical drilling-machine.

The invention consists, mainly, in the application to an ordinaryvertical drilling-machine of a clamping device which holds the bamboo orrod in a V or other shaped groove in a block or table beneath the tool,which is such as to sever a desired length from a rod or cane having itsend curved to correspond with the circumference of the rod orbamlooo towhich the said length is to be fitted. I can thus make mortises at eachend of the bamboo or rod perfectly true and parallel, and I also canmake a mortise at one end of two lengths at the same operation.

I a is the framing or standard, carrying the spindle b, which is drivenby the endless strap 0 in the ordinary manner. 7

d is the adjustable work-table, which is suspended by a chain c, to theother end of which is attached a counterbalance-weight inside thestandard a.

The table cl is provided with three notched supports f for carrying therod or bamboo, the central one, f, of which is a block of wood, throughwhich there is a vertical hole corresponding with the diameter of thetool, so as to allow the latter to pass completely through the rod orbamboo, which is shown dotted in position to be operated upon. The tabled is also provided with an adjustable stop or stops 9, against which theend of the cane or rod is held to determine the length of the part sev=cred by the drilling or mortising tool. This stop or fence is preferablyround or curved to fit the end of the rod or cane if it should be (as itusually is) already mortised.

The clamping device consists, preferably, of a pair of vertical rods orbars h so formed at the base (see Fig. l) as to grip the rod or cane.-The said rods or bars 71 are carried by and capable of slidingvertically in suitable bearings t, fixed to each side of the standard a,and are held up out of action by a coiled spring 70, (or other suitabledevice,) attached to levers Z, which act on the said clamping rods orbars h. A swing-bar or saddle on (see Fig. 1) may connect these leversZ, so as to allow the clamps to accommodate themselves to differentthicknesses or unevenness of the bamboosay, for example, that one clampshould come over a ring or other projection 011 the bamboo or cane. Thiswould not be necessary when treating rods or canes which are of the samediameter from end to end.

The clamping-rods h may be drawn down by a hand-lever; but I prefer touse a treadle attached to the lower end of the rod 11. (See Fig. 1.)

The drilling or mortising tool which I prefer to use is made of a steelcylinder 0, (see Fig. 2,) which is notched likev a saw at thelower-edge. Inside this cylinderois a springpiston 17, which as thecutter 0 descends recedes into the cylinder, compressing the coiledspring until the'tool has out quite through the rod or cane, whenthe-reaction of the said spring will push the plug or button out, thusleaving the cutter free for the next operation.

I may here observe that although I have described and shown my inventionas applied to a vertical drilling-machine it will be evident that it mayalso be arranged to work in the horizontal position, if desired; but Iconsider the vertical arrangement of the apparatus preferable.

I claim as my invention- 1. A machine for mortising bamboo or the like,consisting of a frame, two sliding clamps therein and an adjustablerotary cutter between the clamps, in combination with a table havingshaped supports for the bamboo to cooperate with the said clamps andcutter.

2. A machine for mortising bamboo or the like, consisting of a framehaving bearings, sliding rods in said bearings and provided with clampsand a rotary cutter between the said clamps, in combination with a tablehaving three supports, one under the cutter, substantially as described.

3. A machine for mortising bamboo or the like, consisting of a framehaving bearings, two sliding clamps therein and means for moving thesaid clamps and their hearings, in combination with an adjustable rotarycutter between the two clamps and the table having supports for thebamboo to cooperate with the clamps and cutter.

In testim on y whereof I have signed my 15 name to this specification inthe presence of two subscribing witnesses.

ELI FRAMPTON.

Witnesses:

JNo. HUGHES, J. ERNEST HUGHES.

